SOURCING10: Passing parameters to a Query Based webservice using JAVA

Question

Hi Experts,
I have been working on consuming a Query based webservice published in Souricng10 in a simple JAVA class. The query has a filter parameter which is not mandatory. I am able to consume the webservice using the GET method and display the content of the webservice. But when i try to POST a value to the filter parameter of the query i am getting the following error:
java.io.IOException : Server returned HTTP response code: 415 for URL: http://sapcild9.web.bc:55000/sourcing/ngservices/rest/query/Z_TEST_WS_QUERY/execute/
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
Following is the code which i have used:
   URL url = new URL("http://sapcild9.web.bc:55000/sourcing/ngservices/rest/query/Z_TEST_WS_QUERY/execute/");
   HttpURLConnection connection = (HttpURLConnection)url.openConnection();
   connection.setRequestProperty("Authorization", "Basic " + authStringEnc);
   connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded; charset=UTF-8");
   connection.setRequestProperty("Content-Length", "" +Integer.toString(urlParameters.getBytes().length));
   connection.setRequestProperty("Content-Language", "en-US");
   connection.setUseCaches (false);
   connection.setDoInput(true);
   connection.setDoOutput(true);
   connection.setAllowUserInteraction(true);
   connection.setInstanceFollowRedirects(false);
   connection.setRequestMethod("POST");
   connection.connect();
   //Send request
   OutputStream out = connection.getOutputStream();
   OutputStreamWriter wr= new OutputStreamWriter(out, "UTF-8");
   wr.write("EXTERNAL_ID");
   wr.write("=");
   wr.write(URLEncoder.encode("temp","UTF-8"));
   wr.close();
   out.close();
   is = connection.getInputStream();
   isr =new InputStreamReader(is);
   BufferedReader bufferReader = new BufferedReader(isr);
   String str; StringBuffer stringBuffer = new StringBuffer();
   while ((str = bufferReader.readLine()) != null) {
   stringBuffer.append(str);
   stringBuffer.append("\n");
   System.out.println(stringBuffer.toString());
   connection.disconnect();
   is.close();
Please Advise how to proceed on this isssue?
Thanks in advance.
Srikanth Emani

Answer 1

Hi Gael,
your URL is made up of :
[ProcedureName]?[parameter1]=[value1]&[parameter2]=[value2]
creating URLs like this can have problems especially with spaces and punctuation.
the answer is a FORM
the following will create a hidden form :
FORM ACTION="[ProcedureName]" METHOD="POST" name="F1"
INPUT type="HIDDEN" name="[parameter1]" value="[value1]"
INPUT type="HIDDEN" name="[parameter2]" value="[value2]"
/FORM
you can set the values in the form using:
document.F1.[parameter1].value="abc123%%&&$$!";
document.F1.submit();
will submit the form and the PL/SQL procedure should receive the text as it was contained in the form.
the only characters that can now cause problems are :
" as it delimits the field.
' as it may cause problems in PL/SQL.
\ as it is a special character.
Regards Michael